mcimx27- Freescale Semiconductor, Inc, mcimx27- Datasheet - Page 73

• Manufacturer Part Number: mcimx27-
• Description: Multimedia Applications Processor
• Manufacturer: Freescale Semiconductor, Inc

Freescale Semiconductor
SD1
SD2
SD3
SD4
SD5
SD6
SD7
SD8
ID
SDCLK
SDCLK
ADDR
DQM
RAS
CAS
WE
DQ
CS
SDRAM clock low-level width
CS, RAS, CAS, WE, DQM, CKE setup time
CS, RAS, CAS, WE, DQM, CKE hold time
Address setup time
Address hold time
SDRAM clock high-level width
SDRAM clock cycle time
SDRAM access time
SD4
SD6
SD4
ROW/BA
Table 37. DDR/SDR SDRAM Read Cycle Timing Parameters
SD5
Figure 37. SDRAM Read Cycle Timing Diagram
SD5
SD7
Preliminary—Subject to Change Without Notice
SD10
Parameter
i.MX27 and i.MX27L Data Sheet, Rev. 1.2
SD4
COL/BA
SD4
SD4
SD5
SD5
SD5
SD8
Note: CKE is high during the read/write cycle.
Data
SD1
SD9
SD3
SD2
Symbol
tCMH
tCMS
tCH
tCK
tAS
tAH
tAC
tCL
Min
3.4
3.4
7.5
2.0
1.8
2.0
1.8
—
Max
6.47
4.1
4.1
—
—
—
—
—
Signal Descriptions
Unit
ns
ns
ns
ns
ns
ns
ns
ns
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